Liquid elevator



March 31, 1931. CARETTA I 1,799,086

LIQUID ELEVATOR Filed Feb. 7, 1929 2 Sheets-Sheet l March 31, 1931. E. CARETTA 5 LIQUID ELEVATOR Filed Feb 7, 1929 2 Sheets-Sheet 2 1;? we 72 to)": E550 re Gare t ta Patented Mar. 31, 1931 ETTORE CARETTA, or TURIN, ITALY LIQUZLED E 'EvA'roR Application filed Iebruar'y 7, 1929, Serial No. 338,271, and i Germany March s, 1928.

This invention comprises an elevator for oil and similar viscous liquids in which the adhesive character of the liquid is availed of and thetliquid is elevated by means of an endless member consisting of a ribbon, cord or the like, which provides a lower portion dipped in the liquid to be elevated and an upper portion cooperating with means intended to scrape liquid from said member and to convey it to an outlet of the apparatus.

The a'nnexeddrawing shows by way of example an embodiment of the present invention and I Figure'l is a side view of the apparatus with one of the side walls of the same re moved and with parts in section; I Figure 2 is affront view of the same in position in a vessel;

. Figure 3 is a transverse section on line 3-3 of Fig. 1; i

Figure a is a transverse section on line 41 of Fig. 1;

Figure 5 is a diagrammatic view to'an e11- larged scale showing a part of the apparatus in section;

Figure 6 shows a ribbon adapted for use in the apparatus;

Figure 7 shows a modification of said ribbon- 7 Figure 8 shows a further modification of said ribbon, and v V Figure 9 is a diagrammatic side View of an apparatus provided with electromotor drive and controlling means therefor some parts being in section.

i As illustrated in Figs. 1-4, the apparatus comprises a container which provides a top casing 1' and 2. depending tubular portion 1. Said container 1+1 encloses the whole device and has means as a screw threaded plug 2 for fastening it in collar 20 of a vessel 19 from which the liquid is to be delivered. The bottom portion of tube 1 of said casing has inlet openings 3 for entrance of liquid into said tube 1. v

The side walls of tube 1 are provided with slots 21 in which is mounted to move vertically a transverse spindle 22 which 1s acted downwardly by springs 4 abuttingon stationary abutments 23 solid with guide bolts 82 ofbore 29 of drumand on bored extensions 22 of said spindle extendin in and reciprocating over said bolts 82. A fl anged roller 5 is rotatable on said spindle 22 whose ends move through slots 21 of pipe 1.

At the top of casing 1' is journalled, in side walls 11 of'said easing, a shaft 15 having an outer handle 16 connected therewith in the hereinafter described manner; a flanged drum 7 is carried by said shaft 15 inside said casing 1 and is connected therewith by a ratchet gear as hereinafter described.

A flexible endless ribbon 6 runs over drum 7 androller 5, and a jockey roller 8 engages the outer face of said ribbon to hold it stretched. Of course roller 7 8 could be omitted as ribbon 6 maybe held stretched by the weight of roller 5 and by springs 4 thereof, belng only essential that said endless ribbon 6 is frictionally engaged with drum 7 and is driven by it when said drum 7 is rotated by crank 16.

In casing 1 in register with the portion of ribbon 6 which moves downwardly when crank 16 is actuated, is located a plate 9 cmbracing drum 7 (see Fig. 3) and carrying a scraper 10 which engages the surface of ribbon 6 and leads to an outlet 24 of casing 1, said outlet being normally closed by a shutter 11 fulcrumed at 12 in casing 11; said shutter 11 is acted on by a spring 13 moving it towards closed position and comprises two side parts 14 entering outlet of casing l.

Said shutter 11 normally closes outlet 24 of casing 1 but it may be movedinwardly by the wall of a collecting receptacle which is forced against itinto outlet 24 at the time of use.

Drum 7 is connected with shaft 15 by means of a free wheel or ratchet gear, which in the construction exemplified in Fig. 5 comprises a loose roller 25 seated inan'angular recess 26 of shaft 15 and acted on by a spring 27 located in a bore 28 of said shaft 15 said roller 25 being thereby forced against the surface 7 passed through by shaft 15.

Crank 16 has an elongated slot 30 in itshub portion, said slot being entered by the screwthreaded end 15 ofshaft 15* and a nut 31 provides for clamping said crank 16 in the preferred radial position on shaft 15 to adjust the operative radius of crank 16.

In operation, when crank 16 is actuated to drive the ribbon 6 in the direction of arrows in Fig. 1, the liquid adhering to the portion of said ribbon which extends into Vessel 19 is carried off by said ribbon and fed to scraper 10 which removes it therefrom, and then said liquid flows down along plate 9. Should the shutter 11 be in closed position as shown in Fig. 1, liquid again drops into tube 1 and then into vessel 19 but when a collecting receptacle (not shown) is.applied against shutter 11, this shutter is moved into its dotted-line position in Fig. 1, and thus the mouth of said receptacle can be positioned under plate 9 to collect liquid flowing therefrom.

On the collecting receptacle being removed, shutter 11 again closes automatically under the action of its spring 13.

Ribbon 6 preferably consists of a flexible steel strip having its ends welded or suitably fastened on each other. It has preferably holes 17 therethrough as shown in Figure 6 to enable liquid adhering to internal surface of said ribbon to move onto the outer surface thereof when said internal surface comes in contact with drum 7 in the operation of the apparatus.

Ribbon 6 may also have one or more sets of tongues 18 cut out therein as shown in Figs. 7 and 8 to increase the amount of liquid carried off by said ribbon, said tongues being arranged with their roots in leading position on the ribbon to be deflected by scraper 10 when engaging it.

Ribbon 6 could also consist of a gauze or of a cord or tape of not metallic material having bunches of hairs or the like, or it may consist of a rope of wires or threads adapted to carry off liquid from vessel 19 and supply it to scraper 10.

The drive of the apparatus may be secured by an electromotor whose circuit is controlled by the shutter to start the drive at the time of need and to stop said drive automatically after use.

Such a construction is shown in Figure 9 in which on casing 1 is aflixed a support 33 carrying an electromotor 34 which drives shaft 15 and ribbon actuating drum by means of a reducing gear enclosed in a box 35.

The circuit of said electromotor 34 is made through a socket 36 adapted to have a supply line connected therewith, wire 37, wire 38, contact 39, and asecond contact 40; a conducting bridge 41 is carried by an arm 42 fulcrumed at 43 in a box 44 and act-ed on by a return spring 45, and said bridge 41 is caused to connect contacts 39 and 40 to close the supply circuit if electromotor 34 when shutter 11 is shifted to open outlet 24 under action of a pin 46 carried by shutters 11 and engaging arm 42; on shutter 11 being released return spring of shutter 11 and spring 45 move back parts 11 and 42 to break circuit at 39-40 and to deenergize electromotor 34.

Of course the present invention is not restricted to details described and illustrated it being only confined by appended claims.

What I claim as my invention and desire to secure by United States Letters Patent is V 1. An elevator for lifting viscous liquids comprising a casing having an outlet, a downward extension in said casing below said outlet adapted to extend into liquid and having an inlet opening, a guiding member, in bottom portion of said extension, a drum rotatable in said casing, means for actuating said drum from outside of said casing, a thin and apertured steel ribbon running over said drum and guiding member, and a scraper mounted within said casing above said outlet and acting on the outer face of said ribbon to remove liquid from said ribbon and deliver it through said outlet.

2. An elevator for lifting viscous liquids comprising a casing having an outlet, a downward extension in said casing below said outlet adapted to extend into liquid and having an inlet opening, a guiding member in the bottom portion of said extension, a drum rotatable in said casing, means for actuating said drum from outsideof said casing, a flexible permeable endless ribbon running over said drum and guiding member, a scraper mounted within said casing above said outlet and acting on the outer face of said ribbon to remove liquid therefrom, and deliver it through said outlet, a movable shutter closing said outlet and means holding said shutter in closed position.

3. An elevator for lifting viscous liquids comprising a casing having an inwardly inclined wall and an outlet in said inclined wall, a downward extension in said casing below said outlet adapted to extend into liquid and having an inlet opening, a guiding member in the bottom portion of said extension, a drum rotatable in said casing, means for actuating said drum from outside of said casing, a flexible permeable endless ribbon running over said drum and guiding memher, a scraper mounted within said casing above said outlet and acting on the outer face of said ribbon to remove liquid therefrom and deliver it through said outlet, a shutter to close said outlet, said shutter being mounted to pivot around the lower edge of said outlet, and means holding said shutter in closed position.

4. An elevator for lifting viscous liquids comprising .a casing having an inwardly inclined wall and an outlet in said inclined wall, a downward extension in said casing below said outlet adapted to extend into liquid and having an inlet opening, a guiding member in the bottom portion of said extension, a drum rotatable in said casing, means for actuating said drum from. outside of said casing, a flexible permeable endless ribbon running over said drum and guiding member, a scraper mounted within said casing above said outlet and acting on the outer face of said ribbon to remove liquid therefrom and deliver it through said outlet, a shutter mounted to pivot around the lower edge of said outlet I and adapted to take two end positions in which the upper edge of said shutter lies under the delivery edge of said scraper at opposite sides of the said edge, and means holding said shutter in closed position. 7

5. An elevator for lifting viscous liquids comprising a casing having an outlet, a downward extension in said casing below said outlet adapted to extend into liquid and having an inlet opening, a guiding member in the bottom portion of said extension, a drum rotatable insaid casing, an electromotor outside of said casing and driving said drum, a flexible permeable endless ribbon running over said drum and guiding member, a scraper mounted within said casing above said outlet and acting on the outer face of said ribbon to remove liquid therefrom, and deliver it through said outlet, a movable shutter closing said outlet, means holding said shutter in closed position, a switch in the supply circuit of said electromotor, and cooperating means on said shutter and switch to make the supply circuit of said electromotor dependent upon the shutter position.

6. An elevator for lifting viscous liquids comprising a casing having an inwardly inclined wall and an outlet in said inclined wall, a downward tubular extension having an inlet opening and depending from said casing to provide a self contained unit with said casing, means on said unit for mounting it i in a liquid vessel, a guiding member in the bottom portion of said tubular extension, a drum rotatable in said casing, means for actuating said drum from outside of said casing,

a flexible endless ribbon running over said drum and guiding member, a blade mounted in said casing above said outlet and bearing against said ribbon to remove liquid from said ribbon, and deliver it from said outlet, a shutter mounted to pivot around the lower edge of said outlet and adapted to take two end positions in which the upper edge of said shutter lies under the delivery edge of said scraper at opposite sides of the said edge, and means holding said shutter in closed position. I

In testimony whereof I have signed my name to this specification.

ETTORE CARETTA. 

